2-Chloro-3-cyano-4-(trifluoromethoxy)pyridine-5-carbonyl chloride
3-Bromo-6-nitro-2-(trifluoromethoxy)pyridine-5-carbonyl chloride
5-Bromo-2-nitro-4-(trifluoromethoxy)pyridine-3-carbonyl chloride
5-Bromo-2-nitro-3-(trifluoromethoxy)pyridine-4-carbonyl chloride